LM4050AEX3-3.3

Voltage Reference Overview

The LM4050AEX3-3.3 is a precision micropower shunt voltage reference manufactured by Analog Devices Inc./Maxim Integrated. It provides a fixed reverse breakdown output voltage of 3.3V with an initial accuracy of ±0.1%. The device features a maximum temperature coefficient of 50ppm/°C, guaranteed over the operating temperature range of -40°C to +125°C. It operates within a wide shunt current range from 60µA to 15mA and utilizes a subminiature SC-70-3 surface-mount package.

Voltage Reference Feature Summary

• Laser-trimmed resistors ensure high initial accuracy without requiring external stabilizing capacitors.
• Low dynamic impedance maintains stable reverse breakdown voltage accuracy across wide operating currents and temperatures.
• Ultra-small three-pin SC-70 package offers significant size reduction compared to standard SOT-23 packages.

Voltage Reference Applications

• Space-critical electronic designs requiring compact footprints
• Portable battery-powered instrumentation systems
• Precision analog-to-digital converter (ADC) reference sources

Voltage Reference Procurement Notes

Verify component authenticity through authorized distribution channels due to potential availability constraints. Confirm specific manufacturing lot details and RoHS compliance status directly with the supplier prior to procurement. Ensure storage conditions meet specified humidity sensitivity levels to maintain device integrity during handling and assembly processes.

Voltage Reference Selection Notes

Select this component when fixed 3.3V precision referencing is required in minimal space-constrained environments. The ±0.1% accuracy grade suits applications demanding tight tolerance stability. Verify that the system's quiescent current remains above 60µA to ensure proper regulation operation throughout the entire temperature range.

Voltage Reference Part Context

This part belongs to the LM4050/LM4051 family of two-terminal shunt-mode bandgap voltage references. The series offers multiple fixed reverse breakdown voltages including 1.225V, 2.048V, 2.500V, 3.000V, 4.096V, and 5.000V variants. All models share similar low-noise characteristics and micropower capabilities designed for high-precision measurement applications.

Voltage Reference Replacement Considerations

LM4050AEX3-3.0+T: Provides 3.0V output with identical package and accuracy specifications. LM4050AEX3-3.3+: Identical functional parameters with alternative suffix designation. LM4050BIM3X-3.3: SOT-23 package variant with potentially different thermal characteristics.